{"nhtsa_id":603629,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-02-26","date":"1998-06-01","document_id":"SF158AB","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"GENERAL INFORMATION ON VEHICLES MANUFACTURED FROM JUNE 1, 1997 THROUGH FEBRUARY 2, 1998 EQUIPPED WITH SAB470 10003 ANDD SAB470 20013 HALDEX AIR DRYERS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/603629","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"FREIGHTLINER","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}